Last frost date in Blacksburg, VA
Expect the last frost in Blacksburg around April 24. Frost after May 14 happens in only one year out of ten. The first fall frost usually arrives about October 19, which leaves 175 frost-free days. An early freeze before October 6 happens one year in ten.
- Safe after (10% risk)
- May 14
- Average first frost
- Oct 19
- Frost-free season
- 175 days
- Hard freeze (28°F) ends
- Apr 11
Frost possible in low spots Thu night, low 35°F
National Weather Service forecast, updated Oct 22, 12:57 UTC
- ThuOct 2235°possible frost
- FriOct 2336°possible frost
- SatOct 2433°possible frost
- SunOct 2535°possible frost
- MonOct 2637°
- TueOct 2742°
- WedOct 2842°
Planting calendar for Blacksburg
Windows count forward or back from the average frost dates above. Click a crop for dates across Virginia.
TomatoesMay 1–May 15
PumpkinsMay 8–May 22
SunflowersApr 24–May 15
CucumbersMay 8–May 15
CornMay 1–May 15
Sweet potatoesMay 15–May 29
WatermelonMay 8–May 22
Green beansMay 1–May 22
ZucchiniMay 1–May 15
OkraMay 15–May 29
PeppersMay 8–May 22
BasilMay 1–May 15
Butternut squashMay 1–May 15
CantaloupeMay 8–May 22
EggplantMay 8–May 22
PotatoesMar 27–Apr 10
OnionsMar 13–Apr 3
CarrotsApr 3–May 8
LettuceApr 10–May 1
BroccoliMar 27–Apr 10
BeetsMar 27–May 8
PeasMar 13–Mar 27
CabbageMar 27–Apr 10
RadishesMar 20–May 1
Brussels sproutsApr 10–Apr 24
SpinachMar 13–Apr 3
CilantroApr 10–May 1
KaleMar 27–Apr 10
Collard greensMar 27–Apr 10
TurnipsMar 27–Apr 10
DillApr 24–May 8
CeleryMay 1–May 8
CauliflowerApr 10–Apr 24
LeeksApr 10–Apr 24
Swiss chardApr 10–May 8
ParsleyApr 10–May 1
Tulip bulbsOct 5–Nov 9
GarlicSep 28–Nov 2
Daffodil bulbsSep 21–Nov 2
StrawberriesMar 27–Apr 10
AsparagusMar 27–Apr 10Frost probabilities
| Threshold | Spring, 90% chance later | Spring, 50% | Spring, 10% | Fall, 10% chance earlier | Fall, 50% | Fall, 90% |
|---|---|---|---|---|---|---|
| Light frost, 32°F | Apr 11 | Apr 24 | May 14 | Oct 6 | Oct 19 | Nov 1 |
| Hard freeze, 28°F | Mar 28 | Apr 11 | Apr 27 | Oct 15 | Oct 29 | Nov 8 |
Read the spring 10% column as the date after which only one year in ten still gets frost. That is the safer date for tomatoes, peppers and basil.
Where these numbers come from
NOAA station Blacksburg Nwso (USC00440766) sits 2.0 miles from the center of Blacksburg at 2,103 feet. Its averages cover 1991 to 2020. Low spots, valleys and open fields can keep getting frost a week or two after the station stops; city centers and lakeshores usually get less of it.
Questions
When is the last frost in Blacksburg, VA?
The average last frost date in Blacksburg is April 24, based on NOAA 1991–2020 climate normals. There is a 10% chance of frost after May 14.
When is the first frost in Blacksburg?
The first frost in fall usually comes around October 19. One year in ten it arrives before October 6.
How long is the growing season in Blacksburg?
About 175 days between the average last and first frost.
When should I plant tomatoes in Blacksburg?
Plant tomato seedlings outside from May 1 to May 15. Start seeds indoors six to eight weeks earlier.
Nearby in Virginia
- ChristiansburgApr 19
- SalemApr 3
- Cave SpringApr 3
- RoanokeApr 3
- LynchburgApr 17
- DanvilleApr 8
- StauntonApr 15
- WaynesboroApr 21
- HarrisonburgApr 21
- CharlottesvilleApr 2
- Short PumpApr 10
- CulpeperApr 21